Fastening device for rails



Jan. 31, 1928.

F'. RUDERT FASTENING DEVICE Fon RAILS Filed March 2.8, 192'? Lil Patented Jan. 3l, 1928.

UNITED STATES FRANZ HUBERT, FVHALLE-SAALE, GERMANY.

.y FASTENING nnvrcn Fon. nains.

` Application flied March 28,7192?, Serial No.

My invention relates to improvements in the `constructionof railroad tracks .for sec ondary railroads, such as used e. g. 1n mining, quarrying excavating von open workings 'for lignite, mica, asbestos, tin, copper and other minerals and also `in building harbours, canals, roads, embankments etc.V

ARailroad tracks 'of Vthis Vcharacter are boundzto befrequently shifted obliquely to l0 their 'main direction, so as to provide new places of operation for the machines, eX-

cavators, dredgers and the like and also Afor the rolling stock carried on said tracks.

The primary object of my invention is to provide a simple and eiilective devlce for fastening the rails of railroads of the type,

set forth which is designed in such wise that the rails are unimpeded to move relatively to the clamps by which `they are secured to the ties while the track is shifted.

In kother words the ties must be free to occasionally move from their initially rectangular position to the rails into a more or less oblique position but without causing the fastening elements to become loosened or damaged.

Another object of the invention is to design the fastening device in such wise that its component parts will be held securely in i their place in the tie or in a base plate fixed to the latter independently of the rail proper.

A further object of the invention 1s to design the fastening device in such wise that it can be easily detached from the ties in the shortest possible time and even with the most primitive tools as crow bars, chisels etc., which is most important in cases when the whole railroad track must be taken to pieces in order to be transferred over a considerable distance toa new place of operation.

The nature and scope of my invention is briefly outlined in the appended claims and will be more fully understood from the following specification taken together with the accompanying drawing in which Fig. l is a cross section through a railroad rail showing the improved fastening device in side elevation;

Fig. 2 is a cross section through the tie plate showing the fastening` device in front elevation;

Fig. 3 is a plan view;

Fig. 4 is a perspective view showing salient features of the U-clamp, which forms shifting operation.

179,090, and iny Germany September 3, 1924.y

'one of the main elements of the fastening device; Y

Fig. y5 is a cross section through the U- clamp taken in plane I-I indicated in Fig. 4;

Fig. 6 diagrammatically illustrates a ralfroad vtrack Aof the type set forth during the I propose to secure the railSto the met-allic tie 'proper-or to the base plates a `fastened to the. metallic yor `wooden ties 'by means Aof U-shaped clamps design. The clamps b 4`areprovided with ka lower hook or claw c which engages thetie a from underneath and :an upper claw d which snugly fits over the Vflange of the rail but without firmly clamping the latter-to vthe tie plate.

According to this invention the clamps Z) are formed with convex shaped faces o at their innerside, viz. opposed to the foot `of the rail, the form and locationof said faces b2 being more clearly visible in Figs. t and 5.

The clamps ZJ on being inserted with their v shanks into rectangular holes of the tie plate a are carried thereon by means of laterally projecting shoulders b3, o4.

According to this invention the clamps are formed at their rear side with sloping faces z' the wedge like character of which being indicated in Fig.` l by vertical guide lines.

Conformably thereto the spikes f are provided with wedge shaped faces /L at their inner side, so as to bear upon the rear faces z' of the clamps, whereas the outer faces of the spikes will extend in substantially vertical direction so as to bear against the corresponding walls of the holes in the tie plate a.

As seen in Fig. l the clamps Z) and the spikes j are securely held in their properV place solely by the tie plate a and withoutany cooperation on the part of the rail.

According to this Vinvention the spikes f are formed with a projecting nose g provided preferably at their front side which prevents the spike being driven down too far into the hole of the tie plate 5 thus automatically a clearing space for the insertion of tools for extracting the spikes is provided between the projecting head of the spike j' and the tie plate a.

i prefer to form the spikes f at their top with lugs 'in outwardly extending from the o and" wedges 'f of special Lia shank of the spike at the front and laterally at both sides as seen in Figs. l-3.

Tools` of a primitive character as crow hars, chisels may be used for detaching the spikes hy engaging any,T one of the various lugs m. The disinounting of the whole railroad track is thus greatly facilitated, Whenever :aid track must he taken to pieces for transferring it over a considerable distance to new quarters.

In cases when the track inust be shilted obliquely to its main direction over a coinpuratively short distance-Which is often performed with power driven shifting inachines-the railroad track will repeatedly by forcibly hent :lo as to assume a position shown in dotted lines in Fig. t5.

By reason of the specic construction ol' the Ushaped clamps b and the spikes f which, although securing the rail to the tic or tie plate respectively, do notl irinly clarnp the rail and allow it to niovc longitudinall5v and angularly, any distortion and the break ing of the fasteningr nieinhers frequently errperienced heretofore is eliminated.

It is obvious that various inodiications may be made in the design of the component parts oi the fastening device described above without substantially departing troni the scope of the appended claims and Without deviating from the spirit and the gist of my invention.

lVhat I claim is:

l. fr rail fastening device comprising a 'Ll-shaped clamp and a spike cooperating therewith for the spec'iie purpose set forth, characterized therein that the clamp is provided with a convex shaped face at its inner side opposed to the foot ol the rail.

"3. A rail fastening device for the purpose set forth and having' the features outlined in claiin l, characterized therein that the U-elainp is provided with a Wedge shaped face at the rear for cooperation with a corresponding Wedge shaped lace of the spike.

il. A rail fastening device `for the purpose sct forth and haring the features outlined in elaini l, clnlracterized therein that the spike formed with a lug; projecting from the shank ot the spike underneath the spike head.

l. rail fastening device lor the purpose Set l'oitli and having' the features outlined in claim l, characterized therein, that the spike head is `l'orined with extensions lul:- erally at both sides and at the front.

ln testimony whereof I have signed my naine to this specication. 

